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Black holes suck in objects but
-- according to Einstein's general theory of relativity that time
reversal is possible -- objects that travel through black holes could
theoretically be spewed out of other holes. Such holes are called
white holes. The tunnels that connect black and white holes are known
as wormholes.
The space-time tunnels of another world
Black holes are the final stage of a star's development. But in extraordinary
times, such as the start of the Universe, wormholes could be created.
If the changing nature of space and time is considered, it's better
to think that wormholes appear and disappear. By thinking closely
about wormholes, it's possible to understand that there is a different
world to the one we live on. If we consider both these worlds as being
parallel, wormholes are like a space-time tunnel that joins our world
to the other.
Wormholes present time travel opportunities
Kip Sone, a relative theorist, devised a theory where wormholes could
act as time machines. He believed that, according to the principles
of quantum mechanics, if a space ship was strong enough to travel
at something near light speed through a wormhole, time would travel
backwards. By following the principles of the special theory of relativity
that say time moves slower for objects traveling at the speed of light,
it would be possible to travel in time.
Stephen Hawking has dismissed the possibility of creating time
machines
There are a number of factors working against the theory of creating
a time machine and it's better at this stage to consider its construction
impossible. Stephen Hawking has often said that if the effects of
quantum mechanics are considered, the construction of a time machine
is not possible in the real world. |
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